What is an IMEI number and what is it for?

What is an IMEI number and what is it for? imei slot 1 or 2
➡️【Mk.com】✅दुनिया के अग्रणी ऑनलाइन कैसीनो में खेलें - गारंटीकृत जैकपॉट के साथ विशेष टेबल और लाइव गेम ➤ जुड़ें। ✅  SIM 2 NOT SHOWING IMEI 2 DISAPPEARED imei slot 1 and 2 Each Sim slot has it's own unique imei number @AnnS so if Vodafone attached a blacklist to sim slot one imei which is the main slot people tend

imei slot 1 and 2 SIM 2 NOT SHOWING IMEI 2 DISAPPEARED

imei slot Hi my p40 lite has two slots but one IMEI number, can you please help  IMEI नंबर कैसे बनता है? · 1 दाहिने छोर से हर दूसरे अंक को दुगुना किया जाता है । · 2 अंक को जोड़ा जाता है